precious

The word 'precious' originates from the Latin 'pretiosus', meaning "of great value, costly," which itself derives from 'pretium' (price, worth, reward). The semantic journey is remarkably direct: the core concept of "price" or "value" has been retained throughout. The suffix '-osus' (full of) was added to form an adjective describing something as "full of value." This literal meaning evolved in English to describe not only objects of high monetary worth but also those held in deep affection or considered irreplaceable, thus blending material and emotional value.

Structure: preci (value, price) + ous (adjective suffix) - 'preci': A direct substring from the Latin root 'pretium' (price, value). Its functional role is the core semantic root. - 'ous': A direct substring, an English adjective-forming suffix meaning "full of" or "having the qualities of," from Latin '-osus'.